Keylor Navas costs €10m, Atletico told

Navas, 27, has been one of the stand-out performers at the current World Cup, starring as unfancied Costa Ricans have progressed through to the quarterfinals, and underlined his value by saving a penalty in the round of 16 penalty shootout against Greece.

Widespread reports in Spain have said that Atletico Madrid are interested in signing the 27 year old -- who was excellent for Levante all through last season and has just one year left on his current contract -- should Thibaut Courtois return to Chelsea for the 2014-15 campaign.

Porto are also thought to have already made a bid, while Liverpool, Arsenal and Bayer Leverkusen have also been mentioned as potential destinations for a player who joined Levante from Albacete just two years ago, and reportedly currently earns only 250,000 euros a season.

"Keylor is having a great World Cup, and it is true that not just Spanish clubs but also foreign clubs are showing an interest," Catalan said. "The player and his agent are also in conversations with clubs. Keylor has a buyout clause of 10 million euros, although he is worth much more than that.

Those who watched Levante last season would not have been surprised by Keylor Navas' impressive World Cup.

"The clubs who want him know they have to pay the value of the clause. We have to wait as the player has a lot on at the moment. He has improved a lot over the last season, and is now in the shop window of the World Cup."

"Atletico have known my position from the first moment, for weeks now," he said. "We know that in the days to come other interested parties could come in. Six million euros plus [Leo] Baptistao would be still be just six million euros [in cash]. Wherever Keylor Navas goes it will be to a club which pays his full clause."